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4 votes

Long distance fishing fleet telemetry

Satellite is the solution. HF telemetry is incredibly specialised, requires licenses, and there are not "modules" in the sense you think of. (little pcbs that are cheap) There are many systems for ...
Henry Crun's user avatar
  • 5,393
4 votes
Accepted

How to step down analog sensor signal voltage using voltage divider

When you select resistors for use in a voltage divider there are a couple of things you need to take into account. In your case it is the output impedance of the sensor, roughly speaking how much ...
RoyC's user avatar
  • 10.1k
3 votes

Programming a JN5168-001-Mxx with a USBtinyISP?

Maybe I am late to answer this, but thought to share the ideas for others who may come across this question. You can use FTDI FT232RL or any such USB to TTL converter, connect Rx/Tx of one with Tx/Rx ...
Rajeshwar Singh's user avatar
3 votes
Accepted

Where did I go wrong with picking my baud rates?

Assuming the Adafruit Pro Trinket is just an ATMega328P running at 12 MHz, it cannot divide 12 MHz to an UART bit rate of 200 Kbps, while an ATMega328P running at 8 MHz can. So some clock speeds are ...
Justme's user avatar
  • 152k
2 votes

How to call AT command on XBee from Arduino

There you go. ...
oscros's user avatar
  • 121
2 votes

Xbee configuration with X-CTU on linux

Updating an outdated question. The X-CTU software is now available on Linux and Wine is no longer required. X-CTU is available for download from: https://www.digi.com/products/xbee-rf-solutions/xctu-...
mallwright's user avatar
2 votes
Accepted

Actual power consumtion of xbee series 2 in sleep/power down mode?

First, to answer your question: The actual sleep current of the Xbee Series 2 modules is dependent on voltage and temperature. Over the entire voltage range, it is less than 10µA. At the typical ...
metacollin's user avatar
  • 28.9k
2 votes

Programming a JN5168-001-Mxx with a USBtinyISP?

As I understood the JN5168 is programmable with any SPI flash programmer (I plan to use the UartsBee v5, as described for the MeshBee [1]). If SPIMISO is low on device reset, the JN5168 enters ...
Simon's user avatar
  • 21
2 votes

Xbee series 2 drops off network without apparent cause - diagnostic suggestions?

After much fault finding, the thing that finally fixed this was putting the ATMega328P into "full swing" clock mode, which according to the datasheet is much more resistant to noise than the low power ...
user2702772's user avatar
2 votes
Accepted

Using Xbee pro modules underwater

This isn't going to work. RF is the wrong choice for this, as pointed out in the comments. Instead, you could use optical wavelengths - if your stations are in fixed positions it would be reasonably ...
pericynthion's user avatar
  • 6,174
1 vote
Accepted

Xbee series 2 drops off network without apparent cause - diagnostic suggestions?

The only thing I can think of is that fast current spikes are pulling your supply voltage down again in fast spikes. Try putting a 300nF ceramic in parallel with your 100uF smoothing capacitor. This ...
RoyC's user avatar
  • 10.1k
1 vote

Communication Xbee S1 Coordinator to End Device

Choose a Python XBee library, and use it to send a "Broadcast Message", which means it will go to all the end devices. A Broadcast message is addressed like so: The 64-bit destination ...
Jethro's user avatar
  • 123
1 vote
Accepted

Can I directly read an analog sensor data from the Xbee's ADC?

To read analog (or digital) pins (ie. your sensor data) via the local serial port, send the appropriate D0, D1, D2, D3 command. ...
Java42's user avatar
  • 126
1 vote

How can I make an Arduino accelerometer?

The general idea is: the first rocket will be launched manually, but when it starts to fall (velocity reaches 0 and acceleration becomes negative on the y-axis) You can use an accelerometer, it ...
Jeroen3's user avatar
  • 23k
1 vote

Communication between laptop and atmega2560 via two Xbee S2C

There are good instructions here for set up of the modules: http://www.hobbytronics.co.uk/xbee-s2c-configuration The way the UART is set up is clearly outlined in the datasheet here: https://www....
DiBosco's user avatar
  • 1,394
1 vote

Xbee Running Stuff that Requires More than 3 Volts

I don't know the specifications of your xbee controller, but most microcontrollers can only deliver fairly low currents - often less than 20 mA. The transistor can control the much higher currents ...
Peter Bennett's user avatar
1 vote

Compatibility between XBEE-PRO 900 HP and XBEE SX

The two products are not capable of communicating with each other as they require a different amount of channels to operate over. Digi Forum
Filipe Medeiros de Almeida's user avatar
1 vote
Accepted

Digi XCTU 7.0 not recognizing Xbee Pro SX but can recover without issue

Got a hold of a Xbee engineer, turns out the USB/UART cable was providing just under the required current. The module was turning on/off, which is why I was having trouble communicating with it. When ...
Fred Heinecke's user avatar
1 vote

Which remote communcation type should I use?

To provide 150 meter coverage, it would be better to use Sub 1 GHz RF modules instead of Bluetooth. I think, TI CC1310 seems like a good start point to handle your problem and comes with simple ...
Erdem ŞİMŞEK's user avatar
1 vote

Can an omnidirectional antenna be used with a directional one?

A directional antenna is always preferable to omnidirectional. Both for transmitting and for receiving. But, as you say there may be factors that preclude using a directional antenna. For example, for ...
Richard Crowley's user avatar
1 vote

How can I know that 2 x-bee are paired before or not?

Determine the exact part number of the XBee modules you are using, and then determine whether that part number corresponds to a "Series 1" module (e.g., IEEE 802.15.4) or a "Series 2" (a.k.a. ZigBee) ...
Jim Fischer's user avatar
  • 3,074
1 vote

Xbee compatibility Xbee-PRO

Unfortunately they are not compatible with each other if they have different firmware. The XBP9B-DP 10K is going to speak a different over the air language than the XBP09-DP. However, I have had ...
ChickenDemon's user avatar
1 vote

Xbee XB24-ACI range without antenna

I actually figured it out from this article. http://diychristmas.org/vb1/showthread.php?3086-XBee-Antenna-Types That blue square I have on the xbees are actually antennas. It claims that it is good ...
Defiler's user avatar
  • 21
1 vote

Connecting Xbee to Arduino Micro

The best way to interface the voltage levels is to use a voltage level converter/shifter You can buy these off the shelf as a finished product or make them yourself using transistors/opamps. For the ...
Adam Z's user avatar
  • 768
1 vote

Can an XBee in API mode receive data through serial?

It could be because read() and readline() are blocking methods, when no timeout is set. Initialize the ...
SoreDakeNoKoto's user avatar
1 vote

How to create a network of multiple xbee s2 with python and arduino

I think the response is generated automatically You have to make sure the coordinator knows from which router the data is coming. I think the best way to deal with this is to do asynchronous read/...
nad's user avatar
  • 181
1 vote

Replacement needed for ESP8266

If you are worried about the robustness of ESP modules, I have used ESP in a home automation project and it is running fine continuously for around 5 months and I don't see any reason why it will fail ...
Whiskeyjack's user avatar
  • 8,296
1 vote

Calculating RF attenuation through plastic container

There are so many more factors that will have an impact on transmission distance than any supposed attenuation through the plastic enclosure that you should adopt a different approach. One practical ...
Michael Karas's user avatar
1 vote

Programming a JN5168-001-Mxx with a USBtinyISP?

here is a JennicModuleProgrammer source code will assist to upload firmware to the NXP JN516X using FTDI USB-Serial cable. Also there is a Contiki-OS source code and tool chain assistance for the ...
Oleg Kokorin's user avatar
1 vote

Programming a JN5168-001-Mxx with a USBtinyISP?

I am currently using an FTDI USB to TTL converter to program the Mesh Bee, works great. Simply connect it to the UART0 port and pull down SPIMISO like Simon said. Be careful with the voltage, the Mesh ...
Peter Visser's user avatar

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